<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>02_promise的另外处理方式</title>
</head>
<body>
    
</body>
<!-- 
    有 resolve 就执行 resolve,有 reject 就执行 reject
-->
<script>
    new Promise((resolve,reject) => {
        setTimeout(()=>{
            //resolve('hello success')
            reject('error message')

        },1000)
    }).then( data => {
        console.log(data);
    }, err => {
        console.log(err);
    })
</script>
</html>